usr.bin/window/wwpty.c

   1 /*      $NetBSD: wwpty.c,v 1.8 2003/08/07 11:17:42 agc Exp $    */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)wwpty.c     8.1 (Berkeley) 6/6/93";
  39 #else
  40 __RCSID("$NetBSD: wwpty.c,v 1.8 2003/08/07 11:17:42 agc Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #if !defined(OLD_TTY) && !defined(TIOCPKT)
  45 #include <sys/ioctl.h>
  46 #endif
  47 #include <fcntl.h>
  48 #include <libutil.h>
  49 #include "ww.h"
  50
  51 int
  52 wwgetpty(struct ww *w)
  53 {
  54         int on = 1;
  55         int result, tty;
  56
  57         result = openpty(&w->ww_pty, &tty, w->ww_ttyname, NULL, NULL);
  58         if (result < 0) {
  59                 w->ww_pty = -1;
  60                 wwerrno = WWE_NOPTY;
  61                 return -1;
  62         } else {
  63                 (void) ioctl(w->ww_pty, TIOCPKT, (char *)&on);
  64                 (void) fcntl(w->ww_pty, F_SETFD, 1);
  65                 return 0;
  66         }
  67 }